Oxygen vacancy triggering the broad-spectrum photocatalysis of bismuth oxyhalide solid solution for ciprofloxacin removal

The oxygen vacancy-rich mediated BiOCl0.5I0.5 solid solution was synthesized via ionic liquid assisted solvothermal method. The realized broad-spectrum photocatalytic activity towards antibiotic ciprofloxacin (λ > 580 nm) of BiOCl0.5I0.5 materials mainly attributed to the modulated the electronic state and energy band position by tailoring the surface oxygen vacancy concentration.